Daily Sunspot Evaluation
Observation Sheet Wednesday, 30 July 1980
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 11
- Number of spots (f)
- 31
- Relative number (R)
- 141
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 3 | 11 | 63W | 99 | 66W | ||
| 2 | CAI – 10 | 20 | 09E | 27 | 06E | 5.5 | |
| 3 | HAX – 1 | 27 | 11E | 25 | 08E | ||
| 4 | BXO – 5 | 11 | 19E | 17 | 16E | 3.5 | |
| 5 | CJE – 5 | 17 | 59E | 337 | 56E | 7 | |
| 6 | ARX – 1 | -33 | 59W | 95 | 62W | ||
| 7 | AXX – 1 | -27 | 48W | 84 | 51W | ||
| 8 | HIX – 1 | -6 | 08W | 44 | 11W | 1.5 | |
| 9 | ARX – 2 | -8 | 00 | 36 | 03W | ||
| 10 | ARX – 1 | -35 | 33E | 3 | 30E | ||
| 11 | AXX – 1 | -30 | 60E | 336 | 57E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.